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Vishay General Semiconductor - Diodes Division BZW04-70BHE3/54
- Part No.:
- BZW04-70BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-70BHE3/54.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,004
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Product details
Overview
BZW04-70BHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 70.1 V standoff voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 3.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the BZW04-70BHE3/54 datasheet, BZW04-70BHE3/54 pinout, BZW04-70BHE3/54 application, or BZW04-70BHE3/54 equivalent, this device serves as an AEC-Q101-qualified, RoHS-compliant bidirectional TVS for robust overvoltage protection in space-constrained PCB layouts requiring stable clamping performance across -55 °C to +175 °C junction temperature range.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping behavior without polarity dependency. Its glass-passivated junction ensures low leakage (<1.0 μA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The device uses a DO-41 axial-leaded package with matte tin-plated leads compliant with J-STD-002 and JESD22-B102, supporting soldering up to 275 °C for 10 s. Its 0.105 %/°C temperature coefficient of VBR ensures predictable voltage threshold drift under thermal stress in engine bay or industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 48 V automotive or 60 V industrial bus lines. |
| VBR (min/max) | 77.9 V / 86.1 V at 1 mA - verified breakdown range ensures reliable turn-on within specification tolerance for transient detection. |
| VC @ IPPM | 113 V at 3.5 A - clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe levels below 120 V absolute maximum ratings. |
| PPPM | 400 W - peak pulse power handling capability per 10/1000 μs waveform; supports repetitive surge events at 0.01 % duty cycle. |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in always-on sensor nodes. |
| TJ max. | +175 °C - extended junction temperature rating enables deployment in under-hood automotive or high-ambient industrial enclosures. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with no polarity marking - bidirectional operation eliminates cathode/anode orientation concerns during placement. Leads are matte tin-plated, solderable per J-STD-002, and rated for 275 °C / 10 s solder dip.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in both directions; either lead may connect to protected line or ground - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR and low leakage over lifetime, resisting moisture ingress and electrochemical degradation in humid environments. |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients from relay coil decay or motor commutation without thermal runaway or parametric shift. |
| AEC-Q101 qualification | Validated for automotive applications including powertrain, body electronics, and ADAS sensor modules requiring zero-failure field reliability. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in safety-critical systems such as battery management or industrial PLCs. |
| JESD201 class 2 whisker resistance (HE3) | Prevents tin whisker growth under thermal cycling, ensuring long-term solder joint integrity in automotive and aerospace deployments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load dump and ESD events in vehicle door modules or seat control units. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground to shunt transient energy before it reaches the transceiver's input stage. Use Value: Maintains signal integrity during 100 V/10 ms load dump pulses while holding clamped voltage below 113 V - preserving transceiver functionality without latch-up or damage. |
Use Scenario: Safeguarding analog input channels of programmable logic controllers (PLCs) against 4 kV ESD and 1 kV surge from field wiring. IC Role / Device Role / Timing Role: Front-end transient suppressor on 0–10 V or 4–20 mA sensor inputs, placed before signal conditioning op-amps and ADCs. Use Value: Limits induced voltage spikes to ≤113 V during 8/20 μs surges, preventing ADC saturation and maintaining measurement accuracy across 16-bit resolution ranges. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side overvoltage protection in USB-C PD adapters subjected to capacitor discharge and hot-plug transients. IC Role / Device Role / Timing Role: Clamp device across DC output rails (e.g., 20 V output) to absorb residual surge energy after primary-side MOV suppression. Use Value: Provides precise 70.1 V standoff with <1 μA leakage - avoids unnecessary power loss while guaranteeing sub-113 V clamping during 400 W transient events. |
Use Scenario: Protecting Ethernet PHY interface pins on telecom line cards exposed to lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differential-mode across twisted-pair lanes (e.g., TX+/TX−) to suppress common-mode transients. Use Value: Delivers symmetrical clamping with 0.105 %/°C VBR drift - ensures balanced voltage limiting across all four data pairs under thermal gradient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | DO-214AA package (SMB), 70 V VWM, 400 W PPPM, but higher VC = 115 V and larger footprint (4.5 × 3.9 mm vs. DO-41's 5.2 × 2.7 mm diameter). | Preferred where board space allows surface-mount assembly and higher thermal mass is needed for sustained surge duty cycles. | Select SMBJ70CA only if reworkability and automated SMT placement outweigh axial-lead compatibility requirements. |
| P6KE70CA | DO-15 package, same 70 V VWM and 400 W rating, but lower AEC-Q101 compliance confidence and 120 V VC - 7 V higher clamping than BZW04-70BHE3/54. | Suitable for commercial-grade industrial equipment where automotive qualification is not mandated and 120 V clamping is acceptable. | Choose P6KE70CA when cost sensitivity outweighs AEC-Q101 validation and tighter clamping performance. |
Compared with SMBJ70CA and P6KE70CA, BZW04-70BHE3/54 delivers superior clamping precision (113 V), guaranteed AEC-Q101 qualification, and compact axial form factor - making it optimal for automotive and space-constrained industrial designs demanding repeatable, low-drift transient suppression.
Availability
BZW04-70BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line card surge mitigation requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for BZW04-70BHE3/54 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The BZW04 series is part of Vishay's TransZorb® TVS platform, engineered specifically for bidirectional transient suppression in harsh environments - emphasizing AEC-Q101 qualification, low clamping variance, and robust thermal performance.
FAQ
What is the clamping voltage of BZW04-70BHE3/54 under a 10/1000 μs surge?
The BZW04-70BHE3/54 has a maximum clamping voltage (VC) of 113 V at 3.5 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and reflects worst-case voltage seen by downstream circuitry during standardized surge events - critical for ensuring protected ICs remain within their absolute maximum ratings.
Is BZW04-70BHE3/54 suitable for automotive applications?
Yes, BZW04-70BHE3/54 is AEC-Q101 qualified and carries the HE3 suffix indicating compliance with JESD201 class 2 whisker testing. Its -55 °C to +175 °C operating junction temperature range, DO-41 mechanical robustness, and validated performance under temperature cycling and HTRB make it suitable for under-hood and body electronics applications including ADAS sensors and power distribution modules.
How does the bidirectional design of BZW04-70BHE3/54 affect PCB layout?
The bidirectional nature of BZW04-70BHE3/54 means no polarity marking exists on the DO-41 package - either lead may be connected to the protected line or ground reference. This eliminates orientation constraints during manual or automated placement, reduces assembly errors, and simplifies routing in differential or AC-coupled signal paths where polarity reversal is possible.
What is the standoff voltage (VWM) and why is it important for BZW04-70BHE3/54?
The standoff voltage (VWM) of BZW04-70BHE3/54 is 70.1 V - the maximum continuous DC or RMS voltage the device can withstand without entering avalanche conduction. Selecting a VWM ≥10–20 % above the normal operating voltage (e.g., 48 V bus) ensures reliable operation during nominal conditions while retaining sufficient margin to trigger only during actual overvoltage events.
Does BZW04-70BHE3/54 require heatsinking in typical applications?
No, BZW04-70BHE3/54 does not require external heatsinking for single-event transient suppression due to its 400 W peak pulse rating and low duty cycle (0.01 %). Its 1.5 W steady-state power dissipation (PD) is only relevant for continuous forward conduction - which does not occur in proper TVS operation. Thermal design focuses on PCB copper area for transient energy dissipation, not heatsink attachment.
BZW04-70BHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-70BHE3/54 FAQ
1.How can I place an order for BZW04-70BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-70BHE3/54 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZW04-70BHE3/54 reliable?
The price and inventory of BZW04-70BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-70BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-70BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-70BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-70BHE3/54?
BZW04-70BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-70BHE3/54 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZW04-70BHE3/54?
For technical support, including BZW04-70BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-70BHE3/54 requirements.
6.How does Aetrix verify that BZW04-70BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-70BHE3/54 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZW04-70BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-70BHE3/54?
All BZW04-70BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-70BHE3/54, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZW04-70BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-70BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-70BHE3/54 Tags
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